Mantle dentin
[医] 罩牙[本]质
🧩 词语组成解析
mantle
['mæntl]
n. 覆盖物;幕;披风;斗篷;
vt.&vi. 覆盖;
n. 牙质\\n[医] 牙[本]质
🗣️ 情景例句
I hope your daughter is all right. Good-bye.
我希望你女儿安然无恙。再见。
Courtesy costs nothing.
谦虚恭敬，不用分文。
The question was, which one?
问题是，哪一种气体导致火灾呢？